<!DOCTYPE html>
<html>
	<head>
		<meta charset="UTF-8">
		<title></title>
	</head>
	<body>
		<script type="text/javascript">
			
			test();
			
			function test(){
				var year = prompt("请输入年份:");
				if(year%4==0 && year%100!=0 || year%400==0){
					alert(year+"是闰年");
				}else{
					alert(year+"是平年");
				}
			}
			
		</script>
	</body>
</html>
